DEVSQ

Calculates the sum of squares of deviations of the values in a data set from their arithmetic mean.

Syntax:

DEVSQ( list )

Returns the sum of the squares of the deviations of the values in the list from their arithmetic mean.

list may be a range of cells, an array, or a comma-separated list of values (which may contain cell references and also ranges of cells as one or more of its elements).

Formula:

DEVSQ = i 1n (xix)2

where n is the number of values, xi is the i‑th value, and x is the arithmetic mean of those values.

Revisions:

This function was added in Fireworkz 2.00.

Note:

DEVSQ() is calculated using a one-pass 'calculator' approach using sum-of-squares and square-of-sums as with VAR() etc.